Invention Grant
- Patent Title: Ultra-reliable low latency communications (URLLC) preservation during handovers
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Application No.: US16535513Application Date: 2019-08-08
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Publication No.: US10588052B1Publication Date: 2020-03-10
- Inventor: Vimal Srivastava , Timothy Peter Stammers , Aeneas Sean Dodd-Noble , Srinath Gundavelli
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04W28/12 ; H04W76/10

Abstract:
A control plane of a network, including radios of a radio access network controlled by the control plane and user plane functions controlled by the control plane, establishes first and second protocol data unit (PDU) connections each to handle the same flows of traffic for ultra-reliable low latency communications (URLLC) from user equipment to a data network through first and second source radios, respectively. Due to mobility of the user equipment, the control plane relocates the flows from the first and second source radios to first and second target radios, respectively. To relocate the flows, the control plane receives from the first target radio a notification that identifies flows that cannot be activated on the first target radio. In response to the notification, the control plane commands the first target radio to prioritize the flows that cannot be activated above remaining ones of the flows.
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